Tamour door comprising a door leaf that can be rolled up and uses thereof

ABSTRACT

Disclosed is a tambour door comprising a door leaf that can be rolled up. The door comprises a vertical roller frame for receiving the door leaf, a sliding bar, to which the rollable door leaf is fixed, and an upper horizontal guide rail, in which the sliding bar is displaceably mounted. The invention facilitates a particularly simple, fixed to a wall and the guide rail is configured as a floating guide rail, which is fixed on one side at least indirectly to the roller frame and on the other side in a fixing element that is fastened at least indirectly to a wall. The door can be used as a lavatory door, or in situations requiring privacy protection for a door opening that economizes on space as much as possible.

TECHNICAL FIELD

The present invention relates to a rolling door having a door leaf whichcan be rolled up, and to a method of installing the same.

PRIOR ART

Rolling doors are used nowadays in particular in the industrial sectorif the intention is for a door opening to be opened quickly and, ifappropriate, automatically. It is possible here for the door opening tobe closed in the vertical or horizontal direction.

Thus, for example, EP 0149138 describes an automatic door with two doorparts made of roll-up sheets which, for the purpose of the closing andopening operations, can be moved symmetrically in relation to oneanother in the horizontal direction and are rolled up on rollers. U.S.Pat. No. 4,096,902 describes a similar rolling door in which the sheetsare moved via a mechanism using a toothed belt. A further rolling dooris described in U.S. Pat. No. 490,448, in which it is possible for asingle door leaf comprising segments to be moved via a high-outlay cablemechanism.

DESCRIPTION OF THE INVENTION

Accordingly, the object of the invention is to provide a rolling doorwhich is cost-effective to produce, does not take up much space and isstraightforward to construct and activate, this in conjunction with arolling door having a door leaf which can be rolled up, having avertical roller casing for accommodating the door leaf, having a slidingbar which can be displaced in the horizontal direction and on which theroll-up door leaf is fastened, and having a horizontal guide rail whichis located at the top and in which the sliding bar is mounted in adisplaceable manner.

This object is achieved in that the roller casing is or can be fastenedon a wall by way of its rear side or its outer side, and the guide railis designed as a free guide rail which is fastened, on one side, atleast indirectly on the roller casing and, on the other side, in aholder attached at least indirectly to a wall.

The core of the invention is thus to provide a simplified constructionusing a free guide rail, i.e. a guide rail which is only fastened orsecured at its ends. On one side, in this case, the guide rail isfastened at least indirectly on the roller casing, i.e. it is sufficientto fasten the roller casing on the wall on the one side and to fit theholder on the other side. In particular a rolling door according to theinvention proves to be advantageous when, for example in the case oftoilet cubicles, there is no lintel present. The straightforward modularconstruction allows cost-effective production of the individual partsand installation of the rolling door which does not require high outlay.Moreover, the construction proposed allows the guide rail to be adaptedto the inside width of the door simply by means of cutting to length.This is made possible in that the guide rail is fastened, on both sides,in holders which allow a certain amount of tolerance for the length ofthe guide rail. The production of different lengths of guide rails canthus largely be done away with. The bottom edge of the rolling door,which is exposed as a result of the door being guided exclusively at thetop edge, can be spaced apart from the floor, as a result of which, andthis may be important in particular if the door is used as a toiletdoor, it is easier to clean the door region and good ventilation of theinterior is made possible.

A first preferred embodiment of the rolling door according to theinvention is distinguished in that the guide rail is designed as ahollow profile, a pulling carriage with running rollers preferably beingmounted in a displaceable manner in the hollow profile, and the hollowprofile also preferably having exclusively a slot which is open in thedownward direction and through which the pulling carriage is connectedto the sliding bar. It is possible here, in particular, for the guiderail to be configured as a tube of essentially circular cross section,and for the pulling carriage to comprise at least one pair, inparticular preferably two pairs arranged one behind the other, ofrunning rollers which are arranged to the sides of the pulling carriage,have a curved running surface and on which inner surfaces of the tubewhich are present alongside the slot run. Using a straightforward tubeas the guide rail proves to be particularly favorable in productionterms and results in a pleasing appearance. The curved inner runningsurfaces which are thus available can be used to good effect incombination with curved running surfaces of the running rollers.

A further preferred embodiment of the rolling door is characterized inthat a motor for displacing the sliding bar is arranged in or on theroller casing, and in that this displacement takes place via a spindlewhich is driven by the motor. The spindle here is preferably arranged inthe interior of the guide rail and engages in at least one internalthread in the pulling carriage, this thread being adapted to thecharacteristics of the spindle. It proves to be advantageous here if thespindle, on the side which is directed away from the roller casing, ismounted in the holder. Using a spindle for moving the sliding bar provesto be very reliable and to save a lot of space and, moreover, such adesign is easy to realize. It is also possible here for the axis of themotor to be arranged perpendicularly to the plane of the door on or inthe roller casing and for power to be transmitted to the spindle via anangular gear mechanism. The braking functions which are necessary, interalia, for safety reasons, are preferably arranged, in particular, alongwith the motor, rather than with the gear mechanism, in order for theassociated step-up transmission to be utilized. The spindle ispreferably inserted into an internally threaded (blind) hole provided inthe motor-gear mechanism, and is fixed therein via a locking screw. Itis thus easily possible to compensate for inaccuracies in length whicharise when the spindle is cut to length.

Another embodiment of the rolling door, furthermore, has acounter-profile on that side of the door which is located opposite theroller casing. This counter-profile is fastened on a wall and isdesigned for stopping the sliding bar when the door is closed.Correspondingly, it is possible for the counter-profile to be adapted inshaping to the front edge of the sliding bar, in order to effect thebest possible sealing when the door is closed (this can take place, forexample, via a seal which is arranged on the front edge of the slidingbar and has a specific profile which engages in a corresponding profilein the counter-profile). As an alternative, however, it is also possiblefor the sliding bar simply to be guided behind a wall protrusion. It ispreferable here for the holder for the guide rail to be designed as atop covering for this counter-profile and to be connected firmlythereto. In other words, rather than the holder being fastened directlyon the wall, in the first instance the counter-profile is screwed on andthen the holder is positioned on the counter-profile from above as acovering. This modular construction may prove to be advantageous forinstallation purposes.

For controlling or actuating the door (opening or closing), according toanother embodiment of the invention, a switch for the contactlessoperation of the rolling door is arranged on the roller casing,preferably on its inner side, which is arranged perpendicularly to theplane of the door leaf (in order to avoid the situation where, e.g. ifused as a toilet door, the door is opened accidentally). The contactlessswitch proves to be advantageous, in particular, in terms of hygiene.This switch is preferably designed as a single switch which activatesthe motor logically in each case in dependence on the position of thedoor leaf. This means that, when the door is closed, activation of theswitch automatically opens the door and that, when the door is open,activation of the switch automatically causes the door to be closed.

For safety reasons, it may be advantageous, according to anotherpreferred embodiment, to provide the sliding bar with a mechanism whichallows the sliding bar to tilt if, when the rolling door is beingclosed, an obstacle is located in the inside width of the door. It ispossible here for the mechanism to be designed, for example, as a bar orfork which is arranged vertically and connected rigidly to the pullingcarriage and is attached to the sliding bar via a pivot pin arrangedperpendicularly to the door leaf. This pivot pin is preferably arrangedin the top third of the sliding bar, and means are provided for fixingthe sliding bar in a vertical position and for releasing the same suchthat it can be rotated about the pin only when a certain leverage aboutthis pin is exceeded.

The operation of securing the roll-up door leaf can be realized by theroller casing containing a roller body onto which the roll-up door leafis rolled, the roller body containing a torsion spring such that, whenthe door leaf is being closed, it is unwound from the roller bodycounter to the spring force, and the energy which is built up in theprocess, in particular, is preferably sufficient for rolling up the doorleaf onto the roller body again, without any further motor power, whenthe rolling door is opened. Such a mechanism proves to be advantageousparticularly in respect of the door being opened in an emergency (e.g.also in the event of power failure).

Such a rolling door may have an exchangeable roll-up door leaf or anexchangeable roller body, in order that the door surface, which can beused for example for advertising purposes, is easy to exchange or, inthe case of a defect, to replace. The door leaf may be formed from atleast partially textile woven fabric, possibilities here being, inparticular, laminates made of plastics and woven fabrics. Depending onrequirements, the material has different properties, e.g. coloring,surface configuration, resistance to chemicals, etc. The surface,moreover, can have printing applied to it and can be usedcorrespondingly for advertising graphics or the like. The advertisinggraphics thus appear each time the door is closed and disappear againwhen the door is opened. The default position is normally that in whichthe door is open.

Further preferred embodiments of the rolling door according to theinvention are described in the dependent claims.

The present invention also relates to the use of a rolling door asdescribed above as straightforward interior shutters, e.g. for furnitureand pieces of equipment, as a toilet door, a door for changing cubicles,talk booths such as phone booths, as photo booths, or as a partitiondoor in or on public transport. It proves to be advantageous for theseuses, in particular, as a result of its space-saving construction (nopivoting region, thus, for example, more toilet cubicles per squaremeter, possible straightforward provision of toilet cubicles for thedisabled). In quite general terms, it is thus possible to use this doorin situations where a door opening is to be provided in as space-savinga manner as possible, in particular, with a screen.

The present invention further relates to a method of installing arolling door as described above. In particular here, the roller casingis fastened on a wall on one side of the door opening, thereafter theguide rail and, if appropriate, the spindle are cut to a lengthcorresponding to the inside width of the door opening, and then theholder or, if appropriate, the counter-profile, on which the holder isfastened, is fastened on the other side of the door opening, the guiderail and also, if one is present, the spindle being fastened between theroller casing and holder.

Further preferred embodiments can be gathered from the dependent claims.

BRIEF EXPLANATION OF THE FIGURES

The invention will be explained in more detail hereinbelow, withreference to exemplary embodiments, in conjunction with the drawing, inwhich:

FIG. 1 shows a perspective view of a rolling door in a half-closedposition;

FIG. 2 shows a horizontal section through a rolling door;

FIG. 3 shows a perspective view of the drive mechanism of the rollingdoor;

FIG. 4 shows a view of the guide carriage;

FIG. 5 shows a vertical section through the guide rail with pullingcarriage;

FIG. 6 a) shows a view of the sliding bar in the vertical position; b)shows a view of the sliding bar in the tilted position;

FIG. 7 shows a view of an attachment for the roller body for thetextile; and

FIG. 8 shows a tube for the torsion spring of the roller body.

WAYS OF IMPLEMENTING THE INVENTION

FIG. 1 shows a perspective view of an exemplary embodiment of a rollingdoor 1. In specific terms, this is a door for a toilet cubicle.Partition walls are arranged here to the right and left of the dooropening (essentially only as a screen, not depicted); a door lintel, onthe other hand, is not present. On one side, the roller casing 2 isarranged in the vertical direction. The roller casing 2 has a front side14, which is directed toward the interior of the toilet cubicle. It isalso has an outer side 15, an inner side 16, which is directed towardthe door opening, and a rear side 17. It is possible for the rollercasing 2 either to have its outer side 15 fastened on a side wall of thetoilet cubicle or to have its rear side 17 fitted on a wall part whichis arranged parallel to the plane of the door opening (end-sideinstallation). The fastening using the outer side 15 proves to beparticularly advantageous, in particular, when the individual cubiclesare only separated from one another by partition walls which arearranged perpendicularly to the plane of the door opening. The rollercasing 2 may (optionally) be supported on the floor via a supportingfoot 7. At its top end, the roller casing is provided with a topcovering 12. The drive means are arranged beneath the covering 12. Theroller casing serves for accommodating the roller body and thus providesthe necessary barrier to access. The control and operating elements areadditionally accommodated in this casing.

A guide rail 10 is arranged at right angles to the roller casing 2 andabove the door opening. A vertically arranged counter-profile 8 islocated on that side of the door opening which is located opposite theroller casing 2. It is possible for this counter-profile 8 either tohave its rear side 19 screwed firmly to a wall arranged parallel to theplane of the door opening (end-side installation) or, in particular ifonly partition walls are provided, as has been mentioned above, to havethe outer side 18 fastened on such a partition wall, which is arrangedperpendicularly to the plane of the door opening. The counter-profile 8is covered by a holder 11 at its top end. This holder 11 servessimultaneously as a top covering for the counter-profile 8, as atermination or guide component for the guide rail 10 and as a mount fora spindle 32 arranged in the guide rail 10.

The guide rail 10 thus has one side embedded in the holder 11. At theother, roller-casing end, the guide rail 10 is mounted in the topcovering 12 or in elements arranged beneath this covering. The guiderail 10 has an essentially circular cross section, a slot being arrangedon the underside, with the result that a guide element arranged in theguide rail 10 can guide the door leaf. For this purpose, the rollingdoor 1 also has a vertical sliding bar 4, on which a roll-up door leaf 3is fastened, on one side, over the entire height. The sliding bar 4 hasa length which corresponds essentially to the height of the sheet of thedoor leaf 3 and which does not reach to the floor. A spacing thusremains between the bottom edge of the sliding bar 4 or the bottom edge6 of the door leaf 3 and the floor. The door leaf 3 is not guided on itsunderside, and the abovementioned spacing allows straightforwardcleaning of the floor in the door region.

The roller casing 2 has, on its inner side 16, on the one hand, alateral slot 13 which extends over essentially the entire height of theroller casing and through which the sheet of the door leaf 3 is guided.On the other hand, a switch 9 is arranged on the inner side 16,approximately half way up the latter or at a somewhat lower level. Viathis switch 9, which is designed as a contactless switch, it is possibleto activate the opening or closing operation of the door. The switch 9is realized in a single printed circuit board and can be triggered ifapproached at a distance of a few cm. It may be triggered here, forexample, optically. A logic circuit which activates the motor inaccordance with the closure state of the door is provided here. In otherwords, proximity to the switch when the door is closed opens the door,whereas proximity to the switch when the door is open causes the door tobe closed. Arranging the switch 9 on the inner side 16 of the rollercasing 2 (i.e. on the side of the roller) together with the sensitivitywithin a range of not more than 10 cm proves to be advantageous since,in particular if the door is a toilet door, it is thus possible toprevent the door from being opened accidentally, for example whensomeone is undressing. In order also to prevent the possibility of thedoor being closed from the outside by reaching through the door openingwithout someone being present inside the cubicle, the logic circuitry,moreover, is designed such that the hand has to be held in front of theswitch 9 at least within the first two seconds of the closing operation(i.e. typically until the door is approximately at least half-closed).

FIG. 2 shows a horizontal section through the roller casing 2 in thecentral region with the door drawn back to the maximum extent. Theroller casing 2 has a width of 8 cm and a depth of 18 cm and is producedfrom plastic or metal (e.g. Al, anodized). It has a rounded portion 25in the front region. In addition, fastening profiles 24 are provided onthe outer side 15 and on the rear side 17 in order to allow simplifiedfastening of the roller casing on a wall. Arranged vertically in theroller casing is a roller body 28 onto which the door leaf 3 can berolled up, this roller body thus serving as a winding body for thetextile. For this purpose, the roller body 28 has vertical fasteninggrooves 29 in which one side of the sheet of the door leaf can befastened. The door leaf 3 is guided out of the roller casing 2 via aslot 13. For improved guidance of the door leaf 3, guide loops (e.g.made of plastic) are fastened on this slot 13, preferably on both sides,and feed the sheet in a controlled manner, in particular on the innerside of the roller casing 2, to the slot. The sliding bar 4, for itspart, has a fastening groove 26 in which the sheet of the door leaf 3 isfastened on the other side, over essentially the entire height.Moreover, on the side which is directed toward the door opening, thesliding bar 4 has a seal 5 which extends over the entire length of thesliding bar 4 and is made of soft plastic (edge-protection rubber). Thisseal 5 is secured in the profile of the sliding bar 4 via at least onefastening protrusion 27. The seal 5 serves, on the one hand, for optimumsealing of the door in relation to the counter-profile 8 and, on theother hand, for damping purposes in the event of the sliding barcolliding with an object located in the inside width of the door. Withthe sliding bar 4 drawn in to the full extent, there is a spacing ofapproximately 12 to 13 cm between the outer side 15 of the roller casing2 and the front edge of the sliding bar 4 or of the seal 5. Thisarrangement is thus extremely compact and is advantageous, inparticular, even when a large door opening has to be provided (e.g. intoilets for the disabled).

FIG. 3 shows a perspective view of the drive means for the rolling door,with an attachment plate 31 which can be positioned on the verticalroller-casing profile, which is open in the upward direction (see, forthis purpose, the protrusions provided in the downward direction). Thearrangement shown in this figure, with the door installed, is covered bythe covering 12. The motor 36 is fitted on the attachment plate 31. Theaxis 38 of the motor 36 is arranged horizontally and in a directionperpendicular to the guide rail 10. A brake for the motor 36 is arrangedbeneath the end cap in the region of 38. The moment produced by themotor 36 is converted, via an angular gear mechanism 37 arranged in acasing, into a rotation about an axis parallel to the guide rail 10. Aspindle 32, which is arranged in the guide rail 10, essentially alongthe axis of this guide rail, is driven in the process. The spindle has,for example, a pitch of 50 millimeters. It is necessary here to find acompromise between quick, controlled door movement and the lowestpossible opposing force in the situation where the torsion spring, e.g.in particular in the event of emergency opening, is intended to displacethe sliding bar into the open position without being assisted by themotor. The spindle 32, on this side, has an external thread at its end.The angular gear mechanism 37, for its part, for the purpose of couplingthe spindle 32, has a blind hole with an internal thread foraccommodating the spindle 32. The spindle is correspondingly screwedinto this blind hole and then fixed therein by means of a locking screw33. This method of fastening the spindle 32 allows a certain amount oftolerance in the length of the spindle 32 during installation. This isimportant, in particular, since typically different door openings arepresent at construction sites and, correspondingly, both the guide rail10 and the spindle 32, which are both mounted in the holder 11 on theother side, have to be cut to length corresponding to the inside widthof the door.

The sliding bar 4 is moved in the closing direction by the spindledrive. In this case, the textile is unrolled from the roller body 28. Atthe same time, the torsion spring integrated in the roller body issubjected to stressing. The textile is thus tensioned, without bunching,in any position.

For emergency situations, the motor also has possible means of openingthe door either from the outside (e.g. by means of a square-end tool) orfrom the inside (e.g. by means of a lever). These possible means are ofpurely mechanical configuration, in order that this actuation ispossible even in the event of a power failure, this being the case inthat, for such an opening, essentially only a brake arranged in theregion of the angular gear mechanism is released, and in that sufficientenergy is stored in the torsion spring of the roller body in order toallow the rolling door to open automatically. In the event of anemergency opening, the motor rotates along in the manner of a generatorand thus gives rise to a continuous opening movement (no spring-backmovement). As a result of the low door-leaf weight and the disengagingmechanism of the sliding bar (which will be described at a later stagein the text), it is possible to do away with light barriers, safetystrips and the like. The impact energy is thus low and cannot result ininjury.

The motor-gear mechanism unit thus provides a means of mounting anddriving the spindle 32. By virtue of the motor power being monitored,end positions and possible obstacles can be detected. The directlyattached holding brake guarantees the secure closed position.

FIG. 4 illustrates the carrying mechanism for the sliding bar 4 togetherwith the spindle 32, the guide rail 10 having been removed. A pullingcarriage 39 made of plastic is located in a displaceable manner on thespindle 32. The pulling carriage has two pairs of running rollers 40 and41 which are respectively arranged laterally and one behind the other.Using two pairs of running rollers which are arranged one behind theother and have a height corresponding essentially to the heightavailable in the guide rail 10 means that there is no need to use theusually present counter-pressure rollers for stabilizing purposes if thepulling carriage 39 is subjected to a torque (e.g. when the sliding barstrikes against an obstacle). Since the running rollers run in theinterior of the guide rail 10 with a round cross section, they have acurved running surface 42 (approximately hemispherical). The runningrollers are each simply plugged onto resilient supports 43(straightforward slotted plastic cylinders with an encircling protrusionon the outside). Fastened on the underside of the pulling carriage 39 isa vertical, rigid hollow cylinder 44, in which the sliding bar 4 isfastened.

The spindle thus moves the pulling carriage in the longitudinaldirection. The guide forces which occur are transmitted to the guiderail 10 by guide rollers arranged in pairs. The semicircular geometry ofthe guide rollers can ideally make allowances for angle deviations andtransverse movements.

FIG. 5 shows a corresponding view in a plane perpendicular to thespindle 32. The pulling carriage 39 has at least one inner runningthread 47, in which the thread of the spindle 32 engages and via whichthe pulling carriage 39 is displaced when the spindle 32 is rotated.FIG. 5 also illustrates the guide rail 10, and it can thus be seen howthe running rollers 40/41 run in the guide rail 10. The cylinder 44projects out through a slot 48 on the underside of the guide rail 10.The sliding bar 4 has a fork 45 which, for its part, engages in thecylinder 44 via a fastening pin 49. For this purpose, the cylinder 44contains an inner, encircling groove which accommodates a retaining ringon the fastening pin 49, this ring being arranged in the groovedesignated 50 in FIG. 6 a), when the fastening pin 49 is pushed into thecylinder 44. This ensures firm, but possibly rotatable fastening of thesliding bar 4 on the pulling carriage 39. The fork 45 is thus arrangedrigidly in the vertical direction. The fork 45 is, to a certain extent,concealed in two vertically running cutouts in the profile of thesliding bar 4, these each being arranged to the sides of the fasteninggroove 26. At its bottom end, the fork 45 is attached to the sliding bar4 via a pivot pin 51. As can be seen from FIG. 6 b), this fastening ofthe fork 45 on the sliding bar 4 allows the sliding bar 4 to tilt if,e.g. when the door is being closed, an object is located in the insidewidth of the door opening. It is thus possible to prevent the situationwhere, for example, somebody gets caught in the door. In ordernevertheless to ensure rigid fixing of the fork 45 or sliding bar 4during normal operation, the underside of the fork 45 contains a socket52 which, for its part, in the vertical position of the sliding bar 4,ends up located on a ball 53 which is arranged at the top end of thesliding bar 4 and is resiliently mounted via an adjustment spring. Thisconnection thus only releases the vertical connection of the sliding bar4 when a certain leverage is achieved about the pin 51. This force canbe adjusted via the adjustment spring of the ball 53. Once the slidingbar 4 has been disengaged from its vertical position (as is illustratedin FIG. 6 b), then it is automatically fixed in the vertical positionagain either when the sliding bar 4 is guided into the fully closedposition or when the sliding bar 4 is displaced into the fully openposition.

FIG. 7 shows the top part of half of the roller body 28. It can begathered here how the roller body, which is of exchangeableconfiguration, is mounted via a pin 54 in a bearing location arranged onthe underside of the attachment plate 31. The pin 54 is mounted in adisplaceable manner via an adjustment spring 55, with the result that,for exchange purposes, the roller body 28 can be pushed into the bearinglocation from beneath by way of the pin 54, and can then also be fixedon the underside.

FIG. 8 shows the torsion-spring unit 58 of the roller body 28. This unitis pushed from beneath into the tube which is illustrated in FIG. 7. Inorder to be capable of accommodating the fastening grooves 29, the headpart 59, for its part, has grooves 60. The torsion-spring unit 58 has atube 56, in which the torsion spring is arranged such that at its topend, in the region of the head part 59, it is connected firmly to thetorsion-spring unit 58 and is otherwise rotatable in the tube 56. Thetorsion-spring unit 58 has, at its bottom end, a foot part 61, whichlikewise has grooves 60 for the fastening grooves 29. The foot part 61terminates the tube of the roller body 28 in the downward direction. Afixing means 62 for the torsion spring can likewise be gathered fromthis figure. This fixing means is connected firmly to the bottom end ofthe torsion spring and can be pushed into a rotationally fixed holder inthe roller casing 2. For very straightforward exchange of the rollerbody, which may even be carried out without tools, all that iscorrespondingly required is to exchange the tube with the textile doorleaf fastened thereon. The torsion spring, on the one hand, ensures thatthe textile is tensioned without bunching and, on the other hand,provides the necessary emergency-opening energy.

The same components can be used to realize doors which, depending onrequirements, open to the left or right. The conversion can be done injust a small number of installation steps and can be carried out by thefitter on site.

By virtue of the spindle and the guide rail 10 being cut to length, thedisplacement and/or the inside width can be adapted specifically to theconditions in hand. The cut-to-length parts do not require any furthermachining and can be installed right away. The proposed design makes itpossible to realize variable door widths.

In respect of the control or power supply for individual doors, e.g. inan area with a plurality of toilet cubicles, it is recommended to workwith extra-low voltage (direct-current motors are used correspondingly)and to provide one transformer for each drive group. The individualdoors may be connected in series and, in respect of the power, thesystem may be designed that in each case only 4 doors can be closedsimultaneously upon activation, for example, of 10 doors in an area.Fewer safeguarding measures thus need be taken and, as a result of justone transformer being used, the costs are reduced.

To summarize, the proposed door system has the following advantages:

-   -   Contactless, hygienic door operation    -   Automatic and reliable movement of the door element (without        additional sensors)    -   Automatic emergency opening if required    -   Optimum movement procedure; sliding movement means that no        pivoting region is necessary.    -   Screening    -   Pleasing design    -   The door elements do not require much space, and there is        therefore more space in the cubicle    -   Door element can be used as “rolling” advertising surface.    -   Flexible installation for variable installation situations (only        lateral fastening). No lintel and no guidance on the floor        required    -   By virtue of a minimal door-leaf weight, it is possible to do        away with safety elements external to the drive.    -   Straightforward replacement of existing “manually operated        doors”.    -   Hygiene as a result of being clear of the floor (floor cleaning        is facilitated).    -   Straightforward modular construction    -   Adaptability to construction directly on site during        installation

LIST OF DESIGNATIONS

-   1 Rolling door-   2 Roller casing-   3 Textile door leaf-   4 Sliding bar-   5 Seal of 4-   6 Bottom edge of 3-   7 Supporting foot-   8 Counter-profile-   9 Switch (contactless)-   10 Guide rail-   11 Holder for the guide rail-   12 Top covering of roller casing-   13 Slot for 3 in roller casing-   14 Front side of 2-   15 Outer side of 2-   16 Inner side of 2-   17 Rear side of 2-   18 Outer side of 8-   19 Rear side of 8-   20 Inner side of 8-   21 Top edge of 3-   22 Gap between 3 and 10-   23 Guide loops on 13-   24 Fastening profile on 2 (inside)-   25 Rounded portion-   26 Fastening groove for 3 in 4-   27 Fastening protrusion of 5-   28 Roller body-   29 Fastening groove for 3 in 28-   30 Vertical axis of 28-   31 Attachment plate-   32 Spindle-   33 Locking nut-   34 Guide for 10-   35 Protrusion for slot in 10-   36 Motor-   37 Angular gear mechanism-   38 Axis of 36, region of the brake of the motor-   39 Pulling carriage-   40 Front running rollers-   41 Rear running rollers-   42 Curved running surface of 40 and 41-   43 Support for 40 and 41-   44 Vertical, rigid hollow cylinder on 39-   45 Fork-   46 Cavity of 10-   47 Running thread in 39 for 32-   48 Slot in 10-   49 Fastening pin on 45-   50 Groove for retaining ring in 49-   51 Pivot pin of 45-   52 Socket-   53 Resiliently mounted ball for 52-   54 Pin-   55 Adjustment spring for 54-   56 Tube for torsion spring-   57 Mount for pin 54-   58 Torsion-spring unit-   59 Head part of 58-   60 Grooves for 28-   61 Foot part of 58-   62 Fixing means for torsion spring

1-12. (canceled)
 13. A rolling door comprising: a door leaf which can berolled up, a vertical roller casing for accommodating the door leaf, asliding bar displaceable in a horizontal direction and on which theroll-up door leaf is fastened, and a horizontal guide rail located at atop of the door leaf and in which the sliding bar is mounted in adisplaceable manner, wherein the roller casing is fastened on a wall byway of its rear side or its outer side, and the guide rail is designedas a free guide rail which is fastened, on one side, at least indirectlyon the roller casing and, on the other side, in a holder attached atleast indirectly to a wall.
 14. The rolling door as claimed in claim 13,wherein: a guide rail is designed as a hollow profile, a pullingcarriage with running rollers is mounted in a displaceable manner in thehollow profile, and the hollow profile has exclusively a slot which isopen in a downward direction and through which the pulling carriage isconnected to the sliding bar.
 15. The rolling door as claimed in claim14, wherein: the guide rail is configured as a tube of essentiallycircular cross section, and the pulling carriage has at least one pairof running rollers which are arranged to sides of the pulling carriage,have a curved running surface and on which inner surfaces of the tubewhich are present alongside the slot.
 16. The rolling door as claimed inclaim 14, wherein: a motor for displacing the sliding bar is arranged inor on the roller casing, and the displacement takes place via a spindlewhich is driven by the motor, is preferably arranged in an interior ofthe guide rail, engages in at least one internal thread in a pullingcarriage and, on a side which is directed away from the roller casing,is mounted in the holder.
 17. The rolling door as claimed in claim 13,wherein: a counter-profile is arranged on a side of the door which islocated opposite the roller casing, the counter-profile is fastened on awall, and the counter-profile is designed for stopping the sliding barwhen the door is closed, and the holder for the guide rail is designedas a top covering for the counter-profile and is connected firmlythereto.
 18. The rolling door as claimed in claim 13, wherein a switchfor contactless operation of the rolling door is arranged on the rollercasing, which is arranged perpendicularly to a plane of the door leaf,the switch is designed as a single switch which activates the motorlogically in each case in dependence on the position of the door leaf.19. The rolling door as claimed in claim 13, wherein the sliding bar hasa mechanism which allows the sliding bar to tilt if, when the rollingdoor is being closed, an obstacle is located in an inside width of thedoor.
 20. The rolling door as claimed in claim 19, wherein: themechanism is designed as a bar or fork which is arranged vertically andconnected rigidly to the pulling carriage and is attached to the slidingbar via a pivot pin arranged perpendicularly to the door leaf, the pivotpin being arranged in a top third of the sliding bar, and means fix thesliding bar in a vertical position and release the sliding bar such thatit can be rotated about the pin only when a certain leverage about thepin is exceeded.
 21. The rolling door as claimed in claim 13, whereinthe roller casing contains a roller body onto which the door leaf isrolled, the roller body contains a torsion spring such that, when thedoor leaf is being closed, the torsion spring is unwound from the rollerbody counter to a spring force, and energy built up is sufficient forrolling up the door leaf onto the roller body again, without any furthermotor power, when the rolling door is opened.
 22. The rolling door asclaimed in claim 21, wherein the door leaf or the roller body isexchangeable, and is formed from an at least partially textile wovenfabric.
 23. The rolling door as claimed in claim 13, wherein the rollingdoor is used as interior shutters, a toilet door, a door for changingcubicles, talk booths, photo booths, or a partition door in or on publictransport.
 24. A method of installing a rolling door having a leaf whichcan be rolled up, a vertical roller casing, a sliding bar displaceablein a horizontal direction, a horizontal guide rail, and a holder,comprising the steps of: fastening the roller casing on a wall on oneside of a door opening, cutting the guide rail and, if appropriate, aspindle to a length corresponding to an inside width of the dooropening, fastening the holder or, if appropriate, a counter-profile, onwhich the holder is fastened, on an other side of the door opening, andfastening the guide rail and, if appropriate, the spindle between theroller casing and the holder.
 25. The rolling door as claimed in claim14, wherein: the guide rail is configured as a tube of essentiallycircular cross section, and the pulling carriage has two pairs, arrangedone behind the other, of running rollers which are arranged to sides ofthe pulling carriage, have a curved running surface and on which innersurfaces of the tube which are present alongside the slot.
 26. Therolling door as claimed in claim 18, wherein the switch is arranged onan inner side of the roller casing.